chore(deps): update ubuntu:24.04 docker digest to c4a8d55 (#306)

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/build.yml

@@ -18,7 +18,7 @@ jobs:
         include:
           - name: ubuntu
             image-name: python-base-ubuntu
-            from: ubuntu:24.04@sha256:84e77dee7d1bc93fb029a45e3c6cb9d8aa4831ccfcc7103d36e876938d28895b
+            from: ubuntu:24.04@sha256:c4a8d5503dfb2a3eb8ab5f807da5bc69a85730fb49b5cfca2330194ebcc41c7b
           - name: ubuntu-cloud-archive
             image-name: python-base-ubuntu-cloud-archive
             from: ghcr.io/vexxhost/ubuntu-cloud-archive:2025.2@sha256:69cd566cc8ef5076c53ab03392e569fabae95c2f58d6eba4aebb58a631bb5bc6